ALPHA 4 - Technical details

ALPHA 4

23

25

28

31

Flat surface

m2

23.66

25.59

28.47

31.79

Projected surface

m2

20.27

21.92

24.39

27.23

Span

m

10.60

11.03

11.63

12.29

Projected span

m

8.45

8.79

9.27

9.80

Aspect ratio

4.75

Projected aspect ratio

3.52

Max chord

m

2.78

2.89

3.05

3.23

Min chord

m

0.63

0.65

0.69

0.73

Take off weight **

kg

55 - 75

65 - 88

78 - 106

96 - 130

Glider weight

kg

5.3

5.6

6.1

6.6

Number of cells

39

Number of risers

4+1

4+1

4+1

4+1

Risers length

cm

44

46

48

50

Maxi length of the lines with the risers

m

6.74

7.01

7.39

7.81

Trimmer

no

Symmetric control travel

cm

> 55

> 60

> 65

> 65

Min speed *

km/h

22 +/- 1

Trim speed *

km/h

38 +/- 1

Max. speed *

km/h

47 +/- 2

Min. sink rate *

m/s

1.15

Travel of the accelerator

cm

38.4

39.9

42.0

44.4

Best glide *

8.3 +/- 0.1

Motorised flight

-

DULV

DULV

DULV

Certification

DHV 1/ EN

Leading edge

New Skytex 6.6 Evolution water-repellent, 9092 E117, 44 gr/m2

Top surface

New Skytex 6.6, 9092 E77A, 44 gr/m2

Bottom surface

New Skytex 6.6, 9017 E77A, 40 gr/m2

Supported ribs

New Skytex 6.6, 9092 E38A, 44 gr/m2

Unsupported ribs

New Skytex 6.6, 9017 E38A, 40 gr/m2

Enclosing strap of the leading edge and trailing edge

Polyester/Mylar 20 mm

Enclosing strap of the leading edge lower surface

Polyamid 16 mm

Suspension lines

• Edelrid Technora (Aramid) 6843, 240/200/160, sheathed, 2.1 mm / 1.9 mm / 1.5 mm (main lines)
• Edelrid Technora (Aramid), 6843, 120, sheathed, 1.4 mm (2nd level)
• Liros Dynema, PPSL 120,  sheathed, 1.15 mm (1st level)

Risers

Polyester 22 mm - 1100 kg

Quick links

Maillon Rapide, Inox stainless, 3.5 mm - 750 kg

Stitching thread

Polyester